Last updated: August 27, 2025
Experience the vibrant summer in Sankt Gallen, Switzerland, where the weather in August showcases a delightful range of temperatures. With maximums soaring up to 33°C (91°F) and an average of 19°C (66°F), the days are warm and inviting. However, nights can dip down to a refreshing 9°C (49°F), perfect for cozy evenings. Visitors should prepare for occasional rain, as the region sees about 194 mm (7.7 in) of precipitation over 17 days during the month, accompanied by a high humidity level of 80%. Whether you're exploring the lush surroundings or enjoying the city's cultural offerings, August in Sankt Gallen promises a blend of warmth and charm.
In Sankt Gallen, Switzerland, August marks the peak of summer with temperatures that are both warm and inviting. With a minimum of 9°C (49°F) and average daily temperatures around 19°C (66°F), the city enjoys pleasant conditions that are ideal for outdoor activities. The warmth peaks at a maximum of 33°C (91°F), mirroring the hottest days seen in July. As August unfolds, the steadily rising temperatures from earlier months, particularly June and July, create a lively atmosphere—perfect for festivals and gatherings. As summer begins to gently fade, the temperatures will gradually drop in September, emphasizing the forward march of the seasons, yet August remains a highlight of warmth and vibrancy in Sankt Gallen.
In August, Sankt Gallen experiences a peak in precipitation, with 194 mm (7.7 in) falling over 17 days, marking it as the wettest month of the year. This surge contributes to a gradual increase in rainfall as the summer months progress, rising from 147 mm in May to 168 mm in June and 159 mm in July. The elevated August precipitation not only showcases the region's climatic variability but also sets the stage for a relatively drier September, which sees a significant drop to 128 mm. This trend highlights a distinct seasonal shift, transitioning from the lush, rain-soaked summer towards the cooler, drier months of autumn.
August in Sankt Gallen, Switzerland, sees a humidity level of 80%, marking a slight dip from the summer months of June and July, which hovered at 82% and 83%, respectively. This seasonal shift reflects a broader trend where humidity tends to decrease as summer transitions into early autumn. However, the levels remain relatively high compared to the drier spring months, offering a comfortable yet somewhat moist climate typical of the region. As the year progresses into September, humidity rises slightly to 83%, indicating the lingering warmth of summer before the arrival of autumn's cooler, wetter weather.
In August, Sankt Gallen experiences a very high UV Index of 8, creating ideal conditions for outdoor activities but also necessitating precautions against sun exposure. This month follows a trend established in the preceding summer months, where both June and July also recorded a UV Index of 9. As summer transitions towards autumn, the UV Index begins to decline, with September dropping to 6, indicating a reduction in sun intensity and increased burn time to 25 minutes. Overall, from May through August, residents and visitors should be particularly vigilant, as burn times decrease significantly to just 15 minutes under the strong sun. For detailed monthly ratings and guidance, check out Sankt Gallen UV Index.
UV Risk Categories
August in Sankt Gallen, Switzerland, embraces the warmth of summer with 372 hours of sunshine, making it one of the sunniest months of the year. Following the peak in July with 404 hours, August experiences a slight yet noticeable decline in daylight hours. However, it remains significantly brighter than the earlier months, showcasing a vibrant transition from the intense summer brilliance to the softer hues of early autumn. As daylight diminishes in September and October, with 315 and 269 hours respectively, August serves as a beautiful bridge, inviting outdoor adventures and scenic views bathed in golden sunshine. This trend underlines Sankt Gallen's reputation for splendid summer days, encouraging locals and visitors alike to relish the last bursts of summer's warmth before the crispness of fall sets in.
August in Sankt Gallen presents a moderate chance of sunny weather with a 34% likelihood, marking a plateau after a slight decline through the summer months. As the warm season transitions towards autumn, the sunshine probability hovers similarly to that of June and July. However, this is a step up from the winter months, which demonstrate a stark contrast with percentages as low as 17% in January. Interestingly, the chance of sun does see a notable increase in September, reaching 43%, indicating that late summer and early fall can surprise visitors with bright, sunny days despite August's relatively steady outlook. Overall, while August doesn't promise an abundance of sunshine, it offers a balanced opportunity for bright spells amidst the warm summer ambiance.
In Sankt Gallen, Switzerland, August marks a subtle transition as daylight begins to wane, offering approximately 14 hours of sunlight. Following the peak of 15 hours in June and July, this slight reduction signals the approach of autumn. The prolonged days of summer gradually give way to shorter daylight hours, with September further decreasing to 12 hours. This shift not only transforms the landscape with the onset of rich fall colors but also invites residents and visitors alike to relish the last warm evenings of summer before the chill of winter sets in. The pattern of daylight from January to August reveals a dynamic rhythm of nature, emphasizing the region's vibrant seasonal changes.
In August, Sankt Gallen experiences a gentle breeze, with an average wind speed of 1.8 m/s (4 mph), similar to the calm conditions seen in the months prior. This consistency reflects a broader trend throughout the summer, where wind speeds modestly fluctuate between 1.7 m/s to 2.6 m/s, peaking in May. As summer transitions to autumn, the winds begin to mellow slightly, with subsequent months recording even lower speeds, hinting at the tranquil embrace of the impending fall. Overall, August embodies a serene wind pattern, inviting residents and travelers alike to enjoy the warm, still days of late summer in this picturesque Swiss town.
Weather in Sankt Gallen varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Sankt Gallen, focusing on differences in temperature, rainfall, humidity, and UV levels.
August and January in Sankt Gallen present a stark contrast in weather conditions. August boasts a temperature range from a cool 9°C (49°F) to a warm 33°C (91°F), accompanied by significant precipitation of 194 mm (7.7 in) spread over 17 days. The high humidity, averaging 80%, adds to the summer's warmth. In contrast, January experiences much colder temperatures, with lows plummeting to -14°C (7°F) and daytime highs reaching up to 14°C (57°F). While January has lower overall precipitation at 106 mm (4.2 in) over 12 days, the humidity is notably higher at 92%, contributing to the chilly atmosphere. For more detailed information, you can check Sankt Gallen weather in January.
August and February showcase stark contrasts in weather conditions. In August, temperatures range from a minimum of 9°C (49°F) to a maximum of 33°C (91°F), with an average of 19°C (66°F). This month experiences significant precipitation, totaling 194 mm (7.7 in) across 17 days, coupled with relatively high humidity at 80%. In contrast, February sees a much colder climate, with temperatures dropping to a frigid minimum of -13°C (9°F) and reaching a maximum of 18°C (65°F), averaging just 2°C (37°F). Precipitation in February is considerably lower at 85 mm (3.3 in) over 12 days, although humidity remains high at 89%. For more insights into the weather in February, visit Sankt Gallen weather in February.
In comparing the weather of August and March, significant differences emerge. August experiences much warmer temperatures, ranging from a minimum of 9°C (49°F) to a maximum of 33°C (91°F), with an average of 19°C (66°F). In contrast, March is considerably colder, with temperatures ranging from a biting -14°C (8°F) to a milder maximum of 19°C (66°F), and an average of just 5°C (42°F).
Precipitation in August is notably higher at 194 mm (7.7 in) over 17 days, while March sees less rainfall, totaling 100 mm (3.9 in) across 16 days. Additionally, March displays higher humidity levels at 87%, compared to August's 80%. For a more detailed look at March weather, you can visit Sankt Gallen weather in March.
When comparing the weather in August and April, notable differences emerge in both temperature and precipitation. August tends to be much warmer, with temperatures ranging from a minimum of 9°C (49°F) to a maximum of 33°C (91°F), averaging around 19°C (66°F). In contrast, April boasts cooler temperatures, with a minimum of -6°C (22°F) and a maximum of 24°C (76°F), averaging 9°C (49°F). Precipitation levels also differ significantly; August experiences about 194 mm (7.7 in) of rain over 17 days, while April sees considerably less, with 79 mm (3.1 in) of rainfall across 11 days. Both months have high humidity, but August's average humidity is slightly lower at 80%, compared to April's 84%. For more details, you can check Sankt Gallen weather in April.
When comparing the weather in August and May, it's evident that August tends to be warmer, with average temperatures ranging from a minimum of 9°C (49°F) to a maximum of 33°C (91°F). In contrast, May experiences cooler temperatures, with averages between 0°C (32°F) and 29°C (85°F). Both months have similar levels of humidity at 80% and experience precipitation on 17 days, but August sees significantly higher rainfall, totaling 194 mm (7.7 in) compared to May's 147 mm (5.8 in). For more detailed information about May weather in Sankt Gallen, you can check Sankt Gallen weather in May.
When comparing the weather in August and June, we see some notable similarities and differences. Both months feature a comfortable range of temperatures, with August having a slightly higher average (19°C or 66°F) compared to June's average (18°C or 65°F). The maximum temperatures are comparable, with August peaking at 33°C (91°F) and June reaching 32°C (91°F). However, August experiences more rainfall, totaling 194 mm (7.7 in) over 17 days, while June sees a bit less precipitation at 168 mm (6.6 in) for the same number of days. Humidity levels are also similar, with August at 80% and June slightly higher at 82%. For more detailed weather insights, you can check Sankt Gallen weather in June.
In comparing the weather between July and August, both months exhibit similar temperature ranges, with average highs reaching 33°C (91°F). However, August presents a slightly cooler minimum temperature of 9°C (49°F) compared to July's 10°C (51°F). Precipitation levels increase in August, totaling 194 mm (7.7 in) over 17 days, surpassing July's 159 mm (6.3 in) across 18 days. Additionally, humidity levels remain relatively high in both months, with August at 80% and July at 83%. For a detailed look at July's weather patterns, visit Sankt Gallen weather in July.
August typically experiences warmer weather compared to September, with temperatures ranging from a minimum of 9°C (49°F) to a maximum of 33°C (91°F), averaging around 19°C (66°F). In contrast, September sees cooler temperatures, with a minimum of 4°C (40°F), an average of 15°C (59°F), and a maximum of 27°C (80°F). While August is characterized by higher precipitation levels of 194 mm (7.7 in) over 17 days, September has less rainfall at 128 mm (5.0 in) across 13 days. Interestingly, September also has a slightly higher humidity level of 83% compared to August's 80%. For more details on September weather, check out Sankt Gallen weather in September.
August and October present strikingly different weather patterns. In August, temperatures range from a minimum of 9°C (49°F) to a maximum of 33°C (91°F), with an average temperature of 19°C (66°F), making it a warm month. Precipitation is significant, totaling 194 mm (7.7 in) over 17 days, and humidity averages around 80%, contributing to a muggy atmosphere.
In contrast, October experiences cooler temperatures with a minimum of 2°C (35°F) and a maximum of 23°C (73°F), averaging just 10°C (51°F). Rainfall is reduced to 119 mm (4.7 in) over 14 days, but humidity rises slightly to 90%, resulting in a crisp yet damp feel. For more detailed information on the October weather specifics, you can check Sankt Gallen weather in October.
August typically boasts a much warmer climate compared to November, with minimum temperatures starting at 9°C (49°F) and reaching a maximum of 33°C (91°F) on the hottest days. In contrast, November sees much cooler temperatures, with minimums dropping to -2°C (29°F) and averaging only 5°C (42°F). Precipitation is more frequent in August, with 194 mm (7.7 in) over 17 days, compared to November's 72 mm (2.8 in) over 11 days, indicating that while August can be humid (at 80%), November experiences even higher humidity levels at 88%. For more detailed information, you can visit Sankt Gallen weather in November.
In August, temperatures in Sankt Gallen range from a minimum of 9°C (49°F) to a maximum of 33°C (91°F), with an average temperature of 19°C (66°F). This summer month experiences considerable warmth and humidity, averaging around 80%, along with significant rainfall totaling 194 mm (7.7 in) over 17 days. In contrast, December sees a dramatic drop in temperatures, with minimums plummeting to -7°C (19°F) and a maximum of just 12°C (54°F), averaging around 2°C (36°F). While December has lower overall precipitation at 135 mm (5.3 in), it still experiences rain on 18 days, accompanied by a higher humidity level of 90%. For more detailed information on December weather, visit Sankt Gallen weather in December.
As August descends upon Sankt Gallen, the weather transforms into a blend of warmth and humidity, offering a stark contrast to the cooler months of spring and fall. With maximum temperatures soaring to 33°C (91°F), this month stands out as one of the warmest, inviting both locals and visitors to indulge in outdoor activities. However, the heat is often accompanied by higher humidity levels—averaging around 80%—which can make the warm days feel even hotter. Additionally, August sees an increase in precipitation, with frequent rain showers occurring throughout the month, contributing to its total rainfall of 194 mm (7.7 in) over approximately 17 days. This mix of warmth and sporadic rain defines August in Sankt Gallen, setting it apart from the drier and cooler periods of the year. For a detailed look into the annual weather patterns, visit Sankt Gallen Climate.